Home / 7,829.44-11,743.20-1,986.10

Finding the Fourth Proportional to 7,829.44, 11,743.20 and 1,986.10

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Solution

The fourth proportional to 7,829.44, 11,743.20 and 1,986.10 is: 2,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,829.44 : 11,743.20 = 1,986.10 : x
  2. Step 2: Convert to fraction form
    7,829.44/11,743.20 = 1,986.10/x
  3. Step 3: Cross multiply
    7,829.44x = 11,743.20 × 1,986.10
  4. Step 4: Simplify right side
    7,829.44x = 23,323,169.52
  5. Step 5: Solve for x
    x = 23,323,169.52/7,829.44
  6. Step 6: Final answer
    x = 2,978.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.